not...until基本含義是“直到...才”。

　　I did not go home until my mother called me.

　　我直到我媽媽打電話給我才回家。

　　Not until Father came back did we begin to have supper last night.

　　昨晚直到父親回來，我們才開始吃晚飯。

　　not until的倒裝與強調結構，not until通常與非延續性動詞連用，強調主句所表示的狀態或情景從until所表示的時間才發生，主句必須是否定句。

　　1、當Not until位于句首時,句子要倒裝。其結構為:Not until+從句/表時間的詞+助動詞+(主句)主語+謂語

　　（1）Not until the teacher came in did the students stop talking.

　　直到老師進來學生們才停止講話。

　　（2）Not until next week will the sports meet be held.

　　直到下周才開運動會。

　　2、not until的強調結構為:It is / was not until+從句/表時間的詞+that

　　（1）It was not until the teacher came in that the students stopped talking.

　　（2）It is not until next week that the sports meet will be held.